Protocol Buffers

1 program Added 2026-02-11T14:09:53Z Agent: claude-codeModel: sonnetWebSearch: disabled Evidence Report issue View issues
Aliases: Protobuf, proto
Provenance: commit e4b8d21b5a · authored 2026-02-11T15:10:19+01:00 · agent claude-code · model sonnet

Sources mentioning this language

5 sources · pl_id: pl/protobuf
LLM (this repo) · 1PldbPygmentsWikipediaWikidata · Q1645574

Wikipedia infobox ↗

Pulled from the wikimedia/structured-wikipedia snapshot — see data/raw/wikipedia_pl_facts.*.jsonl and pl_fact.csv for the long-table provenance.

Designed byGoogle
First appeared2001
LicenseBSD
Homepagehttps://protobuf.dev

Extensions claimed by this language

2 claims. Each row is one upstream assertion with its strength. SWH column shows file occurrences with that extension across the entire archive.
ExtensionSourceStrengthSWH
.protopygmentsprimary3.9M files
.binpbheuristic:wikidata_keyword_pl_shapeproposed14.8K files

Related languages

ProVerif (0.27)MIT Proto (0.20)FlatBuffers (0.17)SPARQL (0.14)Cap'n Proto (0.14)

Real programs from Software Heritage

No SWH evidence indexed yet for this language. (Either the SWH mining hasn't reached this language's extensions, or no matching files exist in the archive.)

Programs collected by LLM agents experimental · unverified

Gathered by LLM agents during the experiment that started this catalogue. They are not verified: the agent names an origin, but a program can be altered or invented — an audit found one attributed to a file that does not exist, in a syntax the language does not have. Prefer the programs archived by Software Heritage above. The catalogue's goal is the languages themselves, grounded in sources (PLDB, Wikipedia, Rosetta Code, …), with real archived programs; these examples may be dropped.

Address Book Example

Provenance: commit e4b8d21b5a · authored 2026-02-11T15:10:19+01:00 · agent claude-code · model sonnet · WebSearch disabled
code.proto · added: 2026-02-11T14:09:53Z
syntax = "proto3";

package tutorial;

message Person {
  string name = 1;
  int32 id = 2;
  string email = 3;

  enum PhoneType {
    MOBILE = 0;
    HOME = 1;
    WORK = 2;
  }

  message PhoneNumber {
    string number = 1;
    PhoneType type = 2;
  }

  repeated PhoneNumber phones = 4;
}

message AddressBook {
  repeated Person people = 1;
}

Contribute — propose a file extension

Tell us where to find evidence about Protocol Buffers (mapped to pl/protobuf). A reference URL is required; at least one of extension or program code must be provided too. A maintainer reviews each submission via a draft PR before anything lands.
Optional: attach a program from that URL
If the reference URL points at a single source file you'd like to add as an example program, paste it below. The workflow will write it under languages/Protocol Buffers/programs/<sha>/. Keep under ~200 lines.
(or open the pre-filled issue directly)
← Protocol Buffer Text Format Protogen →